212121110002 has 8 divisors (see below), whose sum is σ = 318422533212. Its totient is φ = 105980265600.

The previous prime is 212121109997. The next prime is 212121110083. The reversal of 212121110002 is 200011121212.

It can be written as a sum of positive squares in 2 ways, for example, as 169751416081 + 42369693921 = 412009^2 + 205839^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40141399 + ... + 40146682.

Almost surely, 2^212121110002 is an apocalyptic number.

212121110002 is a deficient number, since it is larger than the sum of its proper divisors (106301423210).

212121110002 is a wasteful number, since it uses less digits than its factorization.

212121110002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80289404.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 212121110002 its reverse (200011121212), we get a palindrome (412132231214).

The spelling of 212121110002 in words is "two hundred twelve billion, one hundred twenty-one million, one hundred ten thousand, two".